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The experiment was carried out at Federal College of Forestry Jos, in Jos North Local Government Area of Plateau State to determine the phytotoxicity of cypermethrin pesticide on seed germination, growth and yield parameters of cowpea. Cypermethrin is popularly used by farmers as a means of treating seeds before planting to prevent insect, pest and birds attack. Randomized Complete Block Design (RCBD) involving 5 treatments T0 as control (No cypermethrin used), T1 with 0.25% cypermethrin (0.25ml of cypermethrin in 99.75ml of water), T2 with 0.50% cypermethrin (0.50ml of cypermethrin in 99.50ml of water), T3 with 0.75% cypermethrin (0.75ml of cypermethrin in 99.25ml of water) and T4 contained 1.00% cypermethrin (1.0ml of cypermethrin in 99.00ml water). Data was collected on radicle length, plumule length, number of leaves, number of branches, stem girth, number of seeds/pod, 100 seed weight, pod length and dry matter. Data collected was subjected to analysis of variance (ANOVA) at 5% level of significance using SPSS 23 and where significance was declared, Duncan Multiple Range Test (DMRT) was used to separate the means. The result of the research indicates that significance difference occurs in the radicle length (P<0.05) in which T1 has the highest mean value. The stem girth shows a significance difference with T0 having the highest mean value (7.32) at P<0.05. The result for the number of branches and the number of leaves shows significance difference with T0 having the highest mean values 39.15 and 101.65 respectively at P<0.05 level of significance. The yield parameters shows a significance difference for number of seeds/pod, 100 seed weight, pod length, as well as the total dry matter. The highest mean values for the yield parameters are observed in T0 with mean values 18.52, 18.53, 16.35 and 68.35 for number of seeds/pod, 100 seed weight, pod length and total dry mass respectively. Alpha amylase enzyme activity was observed to be higher at lower concentration of the cypermethrin (T1) on day 2 (2.75) but the increase in the enzyme activity tilted towards the highest concentration (T4) on day 3 and day 4 with mean value 2.70 and 3.10 at 5% level of significance.

Aims: To determine the effect of Kalli organic fertilizer on the growth and yield of radish. Study Design: The experimental design used for this study was a Randomized Complete Block Design (RCBD) consisting of four (4) treatments (0, 400, 500 and 600 kgha-1) which were replicated four (4) times. Place and Duration of the Study: The experiment was conducted at Federal College of Forestry Jos, Plateau State located in the North Central part of Nigeria between September – October, 2018. Methods: Soil samples were collected and analysed. Agronomic practices such as land preparation, planting, fertilizer application, weeding and harvesting were also carried out. The data was collected on plant height, number of leaves, leaf area, number of roots, length of roots, diameter of roots, root weight and root yield. Data collected was analysed using Analysis of Variance (ANOVA) with Minitab 23 statistical package at 5% level of probability and where significance was determined Duncan Multiple Range Test (DMRT) was used to separate the means. Results: The findings from this research work revealed that there was no significant effect of Kalli organic fertilizer on the plant height, number of leaves. But the leaf area was found to be significant (p=0.05) at 8WAP with the application of 600 kgha-1 recording the largest (143.30 cm2) leaf. The number of roots, length of roots, weight of root and total yield was found to be significant (P=0.05) on the application of different levels of Kalli organic fertilizer. The application of 600 kgha-1 produced the highest number (35.50) of radish roots, length (24.83 cm) of radish roots, weight (7.20 kg) of radish and total yield (18000 kgha-1) of Radish. Conclusion: Based on this research study it could be concluded that the application of Kalli (600 kgha-1) organic fertilizer significantly increased the yield of Radish. It is therefore recommended that organic fertilizer can be applied for optimum production of Radish.

Organic farming is gaining attention and increasing globally because of its eco-friendly, safety and its health benefits to humans. A field experiment was conducted at Federal College of Forestry Jos, to determine the influence of organic manure and inorganic fertilizer on the growth, yield and phytochemical constituents of cabbage. Randomized Complete Block Design was used as experimental design involving five treatments with T0 as control (No application of manure), T1 (N.P.K fertilizer), T2 (Poultry droppings), T3 (Cow droppings) and T4 (Goat droppings). Data was taken on plant height, number of leaves, head diameter and head weight of cabbage. Qualitative phytochemical analysis on saponins, tannins, alkaloids, flavonoids, cardiac glycosides, anthocyanins, phenols, amino acids, steroids and terpenoids were carried out and quantitative analysis was done for phytochemicals present. The result obtained showed a significant difference for the plant height, leaf count, head diameter and head weight at p≤0.05. Flavonoids, alkaloids, amino acids, terpenoids, tannins and phenols were present in the qualitative analysis and at different rates. Cabbage cultivation with poultry droppings (T2) was observed to stand out from the other treatments for the yield parameters and the phytochemical analysis. Result of the quantitative phytochemicals revealed that more phenolics, alkaloids and flavonoids were present in cabbage grown with organic manure than in inorganic fertilizer.

Aim: To determine the correlation between the growth and yield parameters of cabbage grown with organic manure and inorganic fertilizer. Study Design: The experimental design consist of randomized complete block design with five treatments which were replicated four times. Location and Duration: The experiment was conducted at the experimental field of Federal College of Forestry, Jos, during the 2018/2019 raining season. Methods: Land clearing was done and the land was properly demarcated based on the different treatments and replicates. Cabbage seeds were first planted in a nursery bed and later transplanted onto the experimental plots. Data was taken on the plant height, leaf count, cabbage head diameter and head weight. The data collected were subjected to analysis of variance (ANOVA) using SPSS version 23 and Duncan Multiple Range Test, used to separate the means were significance occurred. Results: The result of the correlation coefficient of growth and yield showed that a strong correlation exist between plant height and cabbage head weight (r = 0.681 and 0.648) at P ≤ 0.01. Plant height was also positively correlated with head weight (r = 0.365, P ≤ 0.05) and head weight was as well and positively correlated with head diameter at (r = 0.501, P ≤ 0.05). Conclusion: Based on the results obtained, it can be concluded that application of organic manure and inorganic fertilizer has positive correlations between the growth and the yield parameters of cabbage.